LACCO, Laboratoire de Catalyse en Chimie Organique, 40 avenue du Recteur Pineau, 86022 Poitiers cedex, France.
Bioresour Technol. 2011 May;102(10):6200-7. doi: 10.1016/j.biortech.2011.02.043. Epub 2011 Feb 13.
The direct liquefaction of a biomass composed of a mixture of wastes (straw, wood and grass) was studied using Nickel Raney as catalyst and tetralin as a solvent. Tetralin allows to solubilize green waste from 330°C at relatively low hydrogen pressure, and avoids the recondensation of the intermediate products. The green waste deoxygenation results mainly from a decarboxylation reaction. The addition of Raney Ni in the feed, increases the gas yield due to methane formation, without diminishing the yield in solvolysis oil. The catalyst hydrogenolyses the small molecules present in the light fraction. Moreover, it improves the quality of the oil by increasing the hydrogen transfer between the solvent and the solvolysis oil. As a consequence, the oxygen content decreases and the yield of oil soluble in hexane strongly increases. The catalyst allows to obtain straight long chain alkanes (C(13)-C(26)), which result from the hydrogenation of the extractives compounds of the green waste.
采用雷尼镍作为催化剂，四氢萘作为溶剂，对由废物（秸秆、木材和草）混合物组成的生物质进行直接液化研究。四氢萘允许在相对较低的氢气压力下从 330°C 溶解绿色废物，并避免中间产物的再冷凝。绿色废物的脱氧主要来自脱羧反应。在进料中添加雷尼镍会由于甲烷的形成而增加气体产率，而不会降低溶剂解油的产率。催化剂将轻馏分中的小分子氢解。此外，它通过增加溶剂和溶剂解油之间的氢转移来提高油的质量。因此，氧含量降低，可溶于己烷的油的产率大大增加。该催化剂可以获得直链长链烷烃（C(13)-C(26)），这些烷烃是由绿色废物的提取物化合物加氢得到的。
